Restructre of Reimbursement Wage Type Amounts in Payroll

Dear Experts
My client implemented SAP India Payroll 3 years back and currently its
running good. They have some reimbursement wage types like Fuel
Reimbursement, Car Maintenance, and Driver Salary etc. Each wage type has
some sealing amount respectively.
Now my client would like to restructure the amounts of each reimbursements
for the current financial year.
Example
Wage Type
Current
Revised
Fuel
5000
7500
Car Maintenance
3000
4000
Telephone
1000
1500

Can you please help me how to configure the revised amounts and also let
me know what are the changes to be done for the above restructure process.

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